Simultaneous masking is a property of the human auditory system where
some sounds simply vanish in the presence of other sounds with certain
characteristics (so called *maskers*).

In the model described in the implemented coder, a short-term frequency representation of the audio is used to help estimate the masking function. To get a frequency representation, a 512-sample FFT with a sine window is performed on the audio every 256 samples to form . Every frequency bin is mapped to a corresponding critical band (a real number), using (8).

- Spreading Function
- Implemented Model for Spreading Function
- Tonality of Maskers
- Implemented Model for Tonality
- Implemented Model for Masking Threshold
- Addition of Simultaneous Masking

Sat Mar 7 16:27:43 PST 1998